Ok Australian N55 135i 2011 owners!!! Success on installing Cobb.. Excited and defiantly less traction on hard acceleration.. Will do some 80-180 acceleration which is where I want the xtra speed !!!
Will keep u posted ...

sweeet, how'd you get it sorted, i'm ready to go on my aug 10 build n55.

It sucks that you have to buy the AP first just to find out you have an older ROM and have to spend $300 more just to be able to use the AP. Then IF you get an update from BMW who is to guarantee that the AP will than support it?

Ok Australian N55 135i 2011 owners!!! Success on installing Cobb.. Excited and defiantly less traction on hard acceleration.. Will do some 80-180 acceleration which is where I want the xtra speed !!!
Will keep u posted ...

Haha I've done some data logging and PSI has increased to approx 13.5 to 14.5 .... Torque is awesome and when changing gear it feels like a kick up the bum... The kick is great fun
Think of it as a coffee a day for a yr and its the caffeine fix for your car
$1000 well spent

I was ready to install my AccessPORT like a kid on Christmas only to get the dreaded ROM update required. I have the 9780B rom on my 2012 135i which is evidently shitty. Now I have to get the dealership to update the ROM. This should be fun. I do have the acceleration lag issue but I thought that was just a common feature of the car.

Did anyone else go from the 9780B ROM to a newer revision (I went to 98G0B) and then install the AccessPORT? Going from 9780B to 98G0B I encountered the typical "de-tuning" which people talk about - ie less pedal response, exhaust noise, etc.

If so, did you feel that after installing the AccessPORT seem to bring back the same amount of life that the car seemed to have before - especially in the lower RPM range?

Did anyone else go from the 9780B ROM to a newer revision (I went to 98G0B) and then install the AccessPORT? Going from 9780B to 98G0B I encountered the typical "de-tuning" which people talk about - ie less pedal response, exhaust noise, etc.

If so, did you feel that after installing the AccessPORT seem to bring back the same amount of life that the car seemed to have before - especially in the lower RPM range?

Our shop car is 98G0B now and personally I think BMW corrected a lot of the odd little quirks of the N55. The maps feel as powerful as ever, but I think everything got a bit smoother. Seems like a lot of the rough idle and general drivabilty is better on the newer rom.

Our shop car is 98G0B now and personally I think BMW corrected a lot of the odd little quirks of the N55. The maps feel as powerful as ever, but I think everything got a bit smoother. Seems like a lot of the rough idle and general drivabilty is better on the newer rom.

-Josh

Hi Josh,

How's it going? Perhaps I just need to put some more miles on it and see how it feels. Perhaps a data log might show something.